$1-2\sin\left(x\right)+\sin\left(x\right)^4=\cos\left(x\right)^4$
$-p^2+p^3$
$\:2x\left(3m+4n\right)+5y\left(3m+4n\right)$
$9a^2x^2-18ax^2$
$4^x+32=3\cdot2^{x+2}$
$4x^6+4x^3+4$
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